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Manalee Tamrakar 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
1x - 3y= 11 .......... (i)
5x+y= 7....... (ii)
Multiply equation (ii) by 3
15x + 3y = 21 ........... (iii)
Adding (i) and (iii), we get
16x = 32
x = 32/16 = 2
Put x = 2 in (i), we gwt
x - 3y = 11
2 - 3y = 11
-3y = 9
y = -3
Posted by Arjun Kashyap 5 years, 8 months ago
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Meghna Thapar 5 years, 7 months ago
Various parts of the brain and their functions are given below:
|
Part of brain |
Functions |
|
Cerebrum |
Governs intelligence, thinking, memory and other mental abilities, voluntary actions, sensations, emotions and speech. |
|
Hypothalamus |
Coordinates messages from the autonomous nervous system, controls involuntary actions, as well as the sexual and emotional behaviour and forms an axis with the pituitary. |
|
Thalamus |
Functions as major coordinating center for sensory and motor signaling. |
|
Midbrain |
The midbrain controls reflex movements of the head, neck and trunk in response to visual and auditory stimuli. It also controls the reflex movements of the eye muscles, changes in pupil size and shape of the eye lens. |
|
Cerebellum |
Responsible for precision and fine control of voluntary movements as well as maintaining posture and equilibrium of the body. |
|
Pons |
It regulates respiration. |
|
Medulla |
Contains vital centre for controlling blood pressure, respiration, swallowing, and salivation, vomiting, sneezing and coughing. |
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Yogita Ingle 5 years, 8 months ago
Biogas is produced from waste which is further used for the growth of plants. The various applications of biogas are:
- Biogas is usable in generating electricity.
- Biogas helps in reducing the global climate change.
- Biogas can generate one billion kilowatt hours of electricity.
- This is quite enough to power millions of homes.
- This is done by converting cow waste into methane with the help of anaerobic digestion process.
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Yogita Ingle 5 years, 8 months ago
BMI is used to determine a person's weight in regard to his height which as a result shows whether a person is underweight, has normal weight, is overweight or obese.
Body Mass Index (BMI):
Step 1 : Weight of person in kgand height in metres is taken.
Step 2 : Divide the weight by the square of the height.
BMI = weight/*height)2
Step 3 :
If BMI < 18.5, then person is undernourished.
If BMI > 25, then person is overweight. (Note : This criterion is not applicable to growing children)
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